./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum_array-2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 23:06:52,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 23:06:52,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 23:06:52,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 23:06:52,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 23:06:52,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 23:06:52,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 23:06:52,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 23:06:52,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 23:06:52,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 23:06:52,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 23:06:52,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 23:06:52,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 23:06:52,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 23:06:52,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 23:06:52,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 23:06:52,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 23:06:52,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 23:06:52,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 23:06:52,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 23:06:52,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 23:06:52,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 23:06:52,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 23:06:52,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 23:06:52,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 23:06:52,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 23:06:52,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 23:06:52,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 23:06:52,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 23:06:52,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 23:06:52,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 23:06:52,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 23:06:52,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 23:06:52,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 23:06:52,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 23:06:52,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 23:06:52,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 23:06:52,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 23:06:52,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 23:06:52,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 23:06:52,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 23:06:52,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 23:06:52,647 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 23:06:52,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 23:06:52,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 23:06:52,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 23:06:52,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 23:06:52,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 23:06:52,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 23:06:52,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 23:06:52,652 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 23:06:52,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 23:06:52,653 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 23:06:52,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 23:06:52,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 23:06:52,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 23:06:52,655 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 23:06:52,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 23:06:52,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 23:06:52,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 23:06:52,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 23:06:52,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:06:52,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 23:06:52,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 23:06:52,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 23:06:52,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 23:06:52,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 23:06:52,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 23:06:52,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 23:06:52,657 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 23:06:52,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 23:06:52,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 23:06:52,658 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 [2023-02-14 23:06:52,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 23:06:52,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 23:06:52,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 23:06:52,863 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 23:06:52,864 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 23:06:52,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-2-2.i [2023-02-14 23:06:53,993 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 23:06:54,158 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 23:06:54,159 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2-2.i [2023-02-14 23:06:54,163 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050b0d83b/eb82f624b4804e9ba8a8f18c93da8948/FLAGee06e35a5 [2023-02-14 23:06:54,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/050b0d83b/eb82f624b4804e9ba8a8f18c93da8948 [2023-02-14 23:06:54,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 23:06:54,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 23:06:54,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 23:06:54,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 23:06:54,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 23:06:54,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f98f495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54, skipping insertion in model container [2023-02-14 23:06:54,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 23:06:54,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 23:06:54,319 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2-2.i[940,953] [2023-02-14 23:06:54,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:06:54,349 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 23:06:54,358 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2-2.i[940,953] [2023-02-14 23:06:54,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:06:54,379 INFO L208 MainTranslator]: Completed translation [2023-02-14 23:06:54,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54 WrapperNode [2023-02-14 23:06:54,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 23:06:54,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 23:06:54,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 23:06:54,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 23:06:54,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,412 INFO L138 Inliner]: procedures = 18, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2023-02-14 23:06:54,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 23:06:54,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 23:06:54,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 23:06:54,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 23:06:54,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,435 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 23:06:54,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 23:06:54,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 23:06:54,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 23:06:54,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (1/1) ... [2023-02-14 23:06:54,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:06:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:06:54,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 23:06:54,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 23:06:54,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 23:06:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 23:06:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 23:06:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 23:06:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 23:06:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 23:06:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 23:06:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 23:06:54,557 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 23:06:54,559 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 23:06:54,708 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 23:06:54,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 23:06:54,713 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 23:06:54,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:54 BoogieIcfgContainer [2023-02-14 23:06:54,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 23:06:54,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 23:06:54,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 23:06:54,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 23:06:54,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:06:54" (1/3) ... [2023-02-14 23:06:54,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e469cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:54, skipping insertion in model container [2023-02-14 23:06:54,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:54" (2/3) ... [2023-02-14 23:06:54,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e469cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:54, skipping insertion in model container [2023-02-14 23:06:54,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:54" (3/3) ... [2023-02-14 23:06:54,735 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array-2-2.i [2023-02-14 23:06:54,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 23:06:54,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 23:06:54,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 23:06:54,801 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2686033b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 23:06:54,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 23:06:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 23:06:54,809 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:06:54,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:06:54,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:06:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:06:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash -385982491, now seen corresponding path program 1 times [2023-02-14 23:06:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:06:54,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138208059] [2023-02-14 23:06:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:06:54,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:06:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:06:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:06:54,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:06:54,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138208059] [2023-02-14 23:06:54,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138208059] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:06:54,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:06:54,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 23:06:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379541903] [2023-02-14 23:06:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:06:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 23:06:55,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:06:55,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 23:06:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:06:55,047 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:06:55,067 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2023-02-14 23:06:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 23:06:55,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-14 23:06:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:06:55,076 INFO L225 Difference]: With dead ends: 45 [2023-02-14 23:06:55,076 INFO L226 Difference]: Without dead ends: 22 [2023-02-14 23:06:55,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:06:55,084 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:06:55,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:06:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-14 23:06:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-14 23:06:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-02-14 23:06:55,119 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2023-02-14 23:06:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:06:55,120 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-02-14 23:06:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-02-14 23:06:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 23:06:55,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:06:55,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:06:55,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 23:06:55,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:06:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:06:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash -391523617, now seen corresponding path program 1 times [2023-02-14 23:06:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:06:55,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853918472] [2023-02-14 23:06:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:06:55,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:06:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:06:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:06:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:06:55,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853918472] [2023-02-14 23:06:55,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853918472] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:06:55,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:06:55,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 23:06:55,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238983506] [2023-02-14 23:06:55,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:06:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 23:06:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:06:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 23:06:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 23:06:55,502 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:06:55,609 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-02-14 23:06:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 23:06:55,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-14 23:06:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:06:55,611 INFO L225 Difference]: With dead ends: 58 [2023-02-14 23:06:55,611 INFO L226 Difference]: Without dead ends: 38 [2023-02-14 23:06:55,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 23:06:55,618 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:06:55,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:06:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-14 23:06:55,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-02-14 23:06:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-02-14 23:06:55,630 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2023-02-14 23:06:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:06:55,633 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-02-14 23:06:55,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:06:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-02-14 23:06:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-14 23:06:55,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:06:55,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:06:55,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 23:06:55,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:06:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:06:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1083884881, now seen corresponding path program 1 times [2023-02-14 23:06:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:06:55,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359284743] [2023-02-14 23:06:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:06:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:06:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:06:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 23:06:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:06:57,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359284743] [2023-02-14 23:06:57,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359284743] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:06:57,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490529645] [2023-02-14 23:06:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:06:57,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:06:57,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:06:57,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:06:57,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 23:06:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:06:57,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-14 23:06:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:06:57,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-14 23:06:57,842 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:06:57,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2023-02-14 23:06:57,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:06:57,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 38 [2023-02-14 23:06:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 23:06:57,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:06:58,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:06:58,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 199 [2023-02-14 23:06:58,981 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:58,985 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:58,987 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:58,992 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:06:59,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 249 [2023-02-14 23:06:59,372 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,375 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,380 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,382 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,386 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,389 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,391 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,397 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,401 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,404 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,406 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2023-02-14 23:06:59,427 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-14 23:06:59,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-02-14 23:06:59,429 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,442 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-14 23:06:59,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 605 treesize of output 1 [2023-02-14 23:06:59,446 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,456 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-14 23:06:59,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 483 treesize of output 1 [2023-02-14 23:06:59,459 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:06:59,467 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-14 23:06:59,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 1 [2023-02-14 23:06:59,476 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-14 23:06:59,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 312 treesize of output 1 [2023-02-14 23:06:59,609 INFO L321 Elim1Store]: treesize reduction 17, result has 85.0 percent of original size [2023-02-14 23:06:59,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 392 [2023-02-14 23:07:08,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:08,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 420 treesize of output 380 [2023-02-14 23:07:11,992 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:11,995 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:12,040 INFO L321 Elim1Store]: treesize reduction 86, result has 23.9 percent of original size [2023-02-14 23:07:12,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 420 treesize of output 294 [2023-02-14 23:07:12,161 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:12,173 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:12,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-14 23:07:12,194 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:12,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-14 23:07:12,205 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:12,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-14 23:07:12,223 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:12,232 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:12,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-14 23:07:12,246 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:12,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-14 23:07:12,248 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:12,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:12,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 238 treesize of output 236 [2023-02-14 23:07:13,466 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,470 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,473 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,474 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,476 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,478 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,480 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,494 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-14 23:07:13,510 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-14 23:07:13,518 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-14 23:07:13,524 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,532 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-14 23:07:13,541 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-14 23:07:13,549 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:13,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2023-02-14 23:07:13,552 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:13,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 133 [2023-02-14 23:07:13,828 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,831 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,841 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,845 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:13,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:13,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 241 [2023-02-14 23:07:14,687 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,691 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,694 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,696 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,699 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,700 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,704 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,719 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,720 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,724 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,726 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,728 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,730 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,733 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,734 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,737 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,740 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,742 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,744 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,746 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,754 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-14 23:07:14,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 475 treesize of output 1 [2023-02-14 23:07:14,758 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,761 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,763 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,765 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,770 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,777 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-14 23:07:14,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 605 treesize of output 1 [2023-02-14 23:07:14,781 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-02-14 23:07:14,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 1 [2023-02-14 23:07:14,792 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-02-14 23:07:14,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 1 [2023-02-14 23:07:14,795 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,803 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-14 23:07:14,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 1 [2023-02-14 23:07:14,810 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-14 23:07:14,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 1 [2023-02-14 23:07:14,814 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,829 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2023-02-14 23:07:14,832 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,835 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,838 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,842 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,848 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,857 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-14 23:07:14,868 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-14 23:07:14,881 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-14 23:07:14,884 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,893 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-14 23:07:14,903 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-14 23:07:14,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-14 23:07:14,906 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,912 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,914 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,917 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,919 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,920 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,923 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,925 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,928 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,931 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,932 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,939 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,941 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,944 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,948 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,950 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,951 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,955 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,957 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,958 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,960 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,961 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,967 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:14,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2023-02-14 23:07:14,970 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,976 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:14,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 1 [2023-02-14 23:07:14,979 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:14,985 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:14,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 1 [2023-02-14 23:07:14,990 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:14,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2023-02-14 23:07:14,996 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:14,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 1 [2023-02-14 23:07:15,002 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:15,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 1 [2023-02-14 23:07:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 23:07:15,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490529645] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:07:15,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:07:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-02-14 23:07:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067715844] [2023-02-14 23:07:15,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:07:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 23:07:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:07:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 23:07:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-02-14 23:07:15,127 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:07:15,482 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-02-14 23:07:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 23:07:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-14 23:07:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:07:15,483 INFO L225 Difference]: With dead ends: 39 [2023-02-14 23:07:15,483 INFO L226 Difference]: Without dead ends: 37 [2023-02-14 23:07:15,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-02-14 23:07:15,484 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 98 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:07:15,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 57 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:07:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-14 23:07:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-02-14 23:07:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-14 23:07:15,490 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2023-02-14 23:07:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:07:15,491 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-14 23:07:15,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-14 23:07:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 23:07:15,491 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:07:15,492 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:07:15,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 23:07:15,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:15,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:07:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:07:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -924768315, now seen corresponding path program 1 times [2023-02-14 23:07:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:07:15,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185590975] [2023-02-14 23:07:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:15,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:07:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 23:07:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:07:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185590975] [2023-02-14 23:07:15,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185590975] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:07:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706875942] [2023-02-14 23:07:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:07:15,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:07:15,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 23:07:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:15,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 23:07:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:07:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 23:07:16,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:07:18,309 WARN L837 $PredicateComparison]: unable to prove that (forall ((|aux_div_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| Int)) (or (<= 0 |aux_div_aux_mod_ULTIMATE.start_main_~M~0#1_45_66|) (< (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) (mod (+ (* |aux_mod_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| 4294967295) 1) 4294967296)) (<= (+ |aux_mod_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| 4294967295 (* |aux_div_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| 4294967296)) 0) (>= |aux_mod_aux_mod_ULTIMATE.start_main_~M~0#1_45_66| 4294967296))) is different from false [2023-02-14 23:07:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-02-14 23:07:18,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706875942] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:07:18,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:07:18,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-02-14 23:07:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578009896] [2023-02-14 23:07:18,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:07:18,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 23:07:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:07:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 23:07:18,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=95, Unknown=1, NotChecked=20, Total=156 [2023-02-14 23:07:18,491 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:07:18,723 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-02-14 23:07:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 23:07:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-14 23:07:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:07:18,724 INFO L225 Difference]: With dead ends: 85 [2023-02-14 23:07:18,724 INFO L226 Difference]: Without dead ends: 52 [2023-02-14 23:07:18,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=40, Invalid=95, Unknown=1, NotChecked=20, Total=156 [2023-02-14 23:07:18,725 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 23:07:18,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 101 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2023-02-14 23:07:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-14 23:07:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2023-02-14 23:07:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-14 23:07:18,732 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 26 [2023-02-14 23:07:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:07:18,732 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-14 23:07:18,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-14 23:07:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-14 23:07:18,733 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:07:18,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:07:18,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 23:07:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-14 23:07:18,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:07:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:07:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 279637269, now seen corresponding path program 2 times [2023-02-14 23:07:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:07:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009354736] [2023-02-14 23:07:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:07:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:07:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:07:21,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009354736] [2023-02-14 23:07:21,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009354736] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:07:21,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640935374] [2023-02-14 23:07:21,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:07:21,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:07:21,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:07:21,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 23:07:22,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 23:07:22,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:07:22,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-14 23:07:22,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:07:22,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-14 23:07:22,239 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:22,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2023-02-14 23:07:22,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:22,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 38 [2023-02-14 23:07:22,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 23:07:22,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:07:22,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:22,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2023-02-14 23:07:23,124 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2023-02-14 23:07:23,157 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-14 23:07:23,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 130 [2023-02-14 23:07:23,172 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,174 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,187 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-14 23:07:23,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 91 [2023-02-14 23:07:23,199 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:23,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 1 [2023-02-14 23:07:23,207 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:23,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 1 [2023-02-14 23:07:23,219 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:23,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 1 [2023-02-14 23:07:23,221 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,231 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:23,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 1 [2023-02-14 23:07:23,233 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,243 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:23,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 1 [2023-02-14 23:07:23,249 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,252 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,254 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,256 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 94 [2023-02-14 23:07:23,271 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 34 [2023-02-14 23:07:23,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 136 [2023-02-14 23:07:23,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 309 treesize of output 229 [2023-02-14 23:07:23,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2023-02-14 23:07:23,332 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,333 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,338 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:23,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:23,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 484 treesize of output 412 [2023-02-14 23:07:28,869 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:28,872 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:28,951 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-14 23:07:28,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 223 [2023-02-14 23:07:29,224 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:29,228 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:29,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:29,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 203 [2023-02-14 23:07:29,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:29,894 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:29,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-14 23:07:29,907 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:29,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:29,917 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:29,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:29,931 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:29,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-14 23:07:29,945 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:29,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:29,963 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:29,967 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:30,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 236 [2023-02-14 23:07:30,754 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,756 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,758 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,760 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,761 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,769 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,773 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,778 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,789 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:30,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:30,793 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,797 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:30,809 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:30,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:30,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:30,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 236 [2023-02-14 23:07:31,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:31,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 281 treesize of output 241 [2023-02-14 23:07:32,388 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,389 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,391 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,394 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,397 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,401 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,403 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,405 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,408 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,423 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,426 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,427 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,429 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,438 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 1 [2023-02-14 23:07:32,445 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 1 [2023-02-14 23:07:32,447 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,449 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,458 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2023-02-14 23:07:32,465 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-14 23:07:32,472 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 1 [2023-02-14 23:07:32,475 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,488 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:32,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-14 23:07:32,494 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,496 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,498 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,499 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,501 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,502 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,504 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,505 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,507 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,510 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,515 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,517 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,523 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,526 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,530 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,538 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:32,546 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,549 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,551 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,553 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,562 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-14 23:07:32,572 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:32,580 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:32,590 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-14 23:07:32,600 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:32,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:32,604 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,609 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,612 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,614 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,616 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,618 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,619 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,633 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,636 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,638 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,644 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,647 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,652 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,653 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,654 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,655 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,656 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,657 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,660 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,662 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,668 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,678 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,691 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-14 23:07:32,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:32,694 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,698 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,703 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:32,710 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-14 23:07:32,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 23:07:32,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640935374] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:07:32,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:07:32,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2023-02-14 23:07:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731612698] [2023-02-14 23:07:32,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:07:32,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 23:07:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:07:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 23:07:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-02-14 23:07:32,919 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:07:33,757 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-02-14 23:07:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 23:07:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-14 23:07:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:07:33,759 INFO L225 Difference]: With dead ends: 53 [2023-02-14 23:07:33,759 INFO L226 Difference]: Without dead ends: 51 [2023-02-14 23:07:33,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2023-02-14 23:07:33,761 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 23:07:33,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 98 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 23:07:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-14 23:07:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2023-02-14 23:07:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-02-14 23:07:33,780 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 36 [2023-02-14 23:07:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:07:33,781 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-02-14 23:07:33,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-02-14 23:07:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-14 23:07:33,786 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:07:33,786 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:07:33,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 23:07:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:33,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:07:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:07:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1046792405, now seen corresponding path program 3 times [2023-02-14 23:07:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:07:33,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755483065] [2023-02-14 23:07:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:07:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 23:07:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:07:34,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755483065] [2023-02-14 23:07:34,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755483065] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:07:34,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73630597] [2023-02-14 23:07:34,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 23:07:34,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:07:34,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:07:34,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 23:07:34,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 23:07:34,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:07:34,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 23:07:34,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:07:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 23:07:34,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:07:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 23:07:34,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73630597] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:07:34,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:07:34,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2023-02-14 23:07:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708578955] [2023-02-14 23:07:34,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:07:34,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 23:07:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:07:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 23:07:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-02-14 23:07:34,672 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:07:34,951 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2023-02-14 23:07:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 23:07:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-14 23:07:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:07:34,952 INFO L225 Difference]: With dead ends: 115 [2023-02-14 23:07:34,952 INFO L226 Difference]: Without dead ends: 66 [2023-02-14 23:07:34,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-02-14 23:07:34,953 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 23:07:34,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 147 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 23:07:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-14 23:07:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2023-02-14 23:07:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-02-14 23:07:34,963 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 40 [2023-02-14 23:07:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:07:34,963 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-02-14 23:07:34,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-02-14 23:07:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 23:07:34,964 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:07:34,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:07:34,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 23:07:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:35,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:07:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:07:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1454597637, now seen corresponding path program 4 times [2023-02-14 23:07:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:07:35,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599904027] [2023-02-14 23:07:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:07:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:07:38,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:07:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599904027] [2023-02-14 23:07:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599904027] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:07:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081189229] [2023-02-14 23:07:38,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 23:07:38,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:07:38,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:07:38,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 23:07:38,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 23:07:38,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:07:38,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-14 23:07:38,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:07:38,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-02-14 23:07:38,493 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:38,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2023-02-14 23:07:38,688 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:38,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 38 [2023-02-14 23:07:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 23:07:38,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:07:39,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:39,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2023-02-14 23:07:39,672 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-14 23:07:39,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 95 [2023-02-14 23:07:39,686 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-14 23:07:39,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 169 [2023-02-14 23:07:39,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:39,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 64 [2023-02-14 23:07:39,715 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-14 23:07:39,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 91 [2023-02-14 23:07:39,727 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:39,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 1 [2023-02-14 23:07:39,735 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:39,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 1 [2023-02-14 23:07:39,738 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,739 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,741 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,748 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:39,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 1 [2023-02-14 23:07:39,759 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-14 23:07:39,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 241 treesize of output 185 [2023-02-14 23:07:39,775 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-14 23:07:39,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 130 [2023-02-14 23:07:39,787 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-14 23:07:39,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 1 [2023-02-14 23:07:39,793 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,795 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,797 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:39,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 170 [2023-02-14 23:07:39,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:39,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2023-02-14 23:07:39,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:39,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 90 [2023-02-14 23:07:39,833 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,835 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,839 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,842 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,845 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,847 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:39,850 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:40,018 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-14 23:07:40,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 514 [2023-02-14 23:07:40,760 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:40,770 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:40,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-14 23:07:40,777 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:40,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-14 23:07:40,793 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:40,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:40,797 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:40,807 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:40,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-14 23:07:40,811 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:40,854 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2023-02-14 23:07:40,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 484 treesize of output 312 [2023-02-14 23:07:41,067 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,078 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:41,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2023-02-14 23:07:41,081 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,082 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:41,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 277 [2023-02-14 23:07:41,731 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,734 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,735 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,737 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,738 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,741 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,742 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,744 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,747 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,749 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,752 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,754 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,762 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,763 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,765 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,768 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,778 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-14 23:07:41,780 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,789 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 1 [2023-02-14 23:07:41,796 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 1 [2023-02-14 23:07:41,814 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 1 [2023-02-14 23:07:41,816 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,818 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,831 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-14 23:07:41,841 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-14 23:07:41,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2023-02-14 23:07:41,846 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,848 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,850 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,852 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,866 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,868 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,871 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,875 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,877 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,878 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,882 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,886 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:41,991 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-14 23:07:41,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 514 [2023-02-14 23:07:43,708 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:43,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-14 23:07:43,717 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:43,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-14 23:07:43,724 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:43,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-14 23:07:43,732 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:43,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:43,763 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2023-02-14 23:07:43,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 103 [2023-02-14 23:07:43,783 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:43,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-14 23:07:43,824 INFO L321 Elim1Store]: treesize reduction 80, result has 33.9 percent of original size [2023-02-14 23:07:43,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 322 treesize of output 234 [2023-02-14 23:07:44,113 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-02-14 23:07:44,476 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:44,477 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:44,487 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:44,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2023-02-14 23:07:44,491 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:44,493 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:44,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 23:07:44,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 277 [2023-02-14 23:07:45,287 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,289 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,290 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,292 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,294 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,296 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,298 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,300 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,303 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,305 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,310 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,311 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,337 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-14 23:07:45,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:45,340 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,341 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,346 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,348 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,355 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-14 23:07:45,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:45,357 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,362 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-14 23:07:45,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:45,370 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-14 23:07:45,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:45,377 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-14 23:07:45,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 565 treesize of output 1 [2023-02-14 23:07:45,384 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-14 23:07:45,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 374 treesize of output 1 [2023-02-14 23:07:45,387 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,391 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,395 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,399 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,401 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,408 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,409 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,411 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,413 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,414 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,416 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,417 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,420 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,421 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,422 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,423 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,425 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,434 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,439 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,442 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,446 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,449 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,454 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,456 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,457 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,458 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,459 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,462 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,465 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,466 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,468 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,469 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,471 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,473 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,484 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-14 23:07:45,495 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-14 23:07:45,504 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:45,507 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,516 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-14 23:07:45,524 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-14 23:07:45,534 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-14 23:07:45,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-14 23:07:45,540 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,543 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,546 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,550 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,552 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 23:07:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 23:07:45,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081189229] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:07:45,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:07:45,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2023-02-14 23:07:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665776991] [2023-02-14 23:07:45,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:07:45,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-14 23:07:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:07:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-14 23:07:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2023-02-14 23:07:45,882 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:07:47,204 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-02-14 23:07:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 23:07:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-14 23:07:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:07:47,205 INFO L225 Difference]: With dead ends: 67 [2023-02-14 23:07:47,205 INFO L226 Difference]: Without dead ends: 65 [2023-02-14 23:07:47,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2023-02-14 23:07:47,209 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 98 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 23:07:47,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 232 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 23:07:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-14 23:07:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2023-02-14 23:07:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2023-02-14 23:07:47,218 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 50 [2023-02-14 23:07:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:07:47,218 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2023-02-14 23:07:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:07:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2023-02-14 23:07:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-14 23:07:47,219 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:07:47,220 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:07:47,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 23:07:47,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:47,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:07:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:07:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1506803439, now seen corresponding path program 5 times [2023-02-14 23:07:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:07:47,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184885110] [2023-02-14 23:07:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:07:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:07:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:07:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-14 23:07:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:07:47,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184885110] [2023-02-14 23:07:47,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184885110] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:07:47,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163882060] [2023-02-14 23:07:47,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 23:07:47,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:07:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:07:47,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:07:47,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process